Democratic systems are forms of government where power is vested in the people, who exercise that power directly or through elected representatives. In these systems, citizens have the right to vote on laws and policies, ensuring that their voices are heard in decision-making processes. Key features of democratic systems include free and fair elections, the rule of law, and the protection of individual rights. Examples of democratic systems include parliamentary democracies and presidential democracies, where different structures and processes are used to represent the will of the people while maintaining checks and balances on power.